Tree Risk QTRA

Insights

Duty of care, fire operations and the QTRA method — written by a QTRA-certified forester and former Queensland fire sector commander. Every claim is sourced.

16 articles

WHS & SafetySeptember 2026 · 6 min read

A holiday park was fined $475,000 over a falling branch

The operator was not convicted of getting an assessment wrong. They were convicted of not having one — and 137 of 277 trees turned out to need work.

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WHS & SafetySeptember 2026 · 6 min read

Trees over your workplace — what the WHS Act 2011 actually requires

Section 19 covers the whole work environment, not the building line. What “reasonably practicable” means for tree risk, and the four things that close the gap.

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Tree RiskSeptember 2026 · 6 min read

What does a QTRA tree risk report cost in Queensland?

Quotes vary by a factor of five for what sounds like the same document. What the market charges, what moves the number, and the one question worth asking every quote.

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Tree RiskSeptember 2026 · 7 min read

QTRA vs TRAQ vs VALID — which method is better in SE Queensland?

They aim to do the same job and work very differently. The research says accuracy is not the difference — so here is what is.

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Tree RiskSeptember 2026 · 6 min read

How to tell if a eucalyptus tree is structurally unsafe

Eucalypts do not drop limbs for no reason. They drop them for reasons, and many of those reasons are visible from the ground.

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WHS & SafetySeptember 2026 · 6 min read

Strata and body corporate tree risk in QLD — who is liable?

The tree is almost always the body corporate’s. The question is whether the committee knew, or ought to have known — and whether it acted.

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Tree RiskSeptember 2026 · 6 min read

The QTRA probability score — how one number changes every tree decision

Most assessments produce an opinion. QTRA produces a number — and the difference shows up most clearly when you are trying to keep a tree, not remove one.

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Fire & BurnSeptember 2026 · 6 min read

Post-fire widow makers — the secondary failure risk after a burn

The fire is out, the smoke has cleared, the threat has visibly passed — and the trees are still failing, without warning, for weeks.

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Fire & BurnSeptember 2026 · 6 min read

Mapping firefighter exclusion zones before a prescribed burn

Exclusion zones run to a minimum of two tree lengths — a 60-metre radius for a 30-metre gum. The geometry surprises most people the first time they draw it.

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WHS & SafetySeptember 2026 · 6 min read

Aged care and retirement villages — tree risk and duty of care

Target occupancy drives QTRA results, and aged care sites have the highest of any residential setting — with a population least able to move out of the way.

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Tree RiskSeptember 2026 · 5 min read

Post-storm tree assessment — the 48-hour secondary failure window

Root plates move without the tree going over. Hung limbs come down in still air. And the survivors of a group are carrying loads they never adapted to.

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WHS & SafetySeptember 2026 · 5 min read

Pre-purchase tree inspection — what building reports miss

Your building inspector did not miss the tree. Assessing it was never inside the scope — AS 4349.1 excludes landscaping explicitly.

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Fire & BurnSeptember 2026 · 6 min read

Pre-burn hazard tree assessment — what QLD fire crews need

A hazard tree in a burn zone does not fail on a convenient timeline. The dangerous window is mop-up and re-entry, when crews are on the ground and tired.

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Fire & BurnSeptember 2026 · 6 min read

Post-fire re-entry — clearing a property safely before crews go in

The urgency is real and it runs directly against the fact that the hazard population is still changing. A six-step zoned clearance process.

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Tree RiskSeptember 2026 · 7 min read

Tree risk assessment in Australia — what QTRA is, and who needs one

The duty to manage tree risk is enforceable. The qualification to assess it is not regulated at all. That gap is worth understanding first.

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Fire & BurnSeptember 2026 · 6 min read

BAL assessment and your trees — what the rating doesn’t tell you

A BAL rating is a construction standard. It tells a builder how to build — not which of your trees is going to come down across the driveway.

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